8703421 has 4 divisors (see below), whose sum is σ = 8714844. Its totient is φ = 8692000.

The previous prime is 8703403. The next prime is 8703427. The reversal of 8703421 is 1243078.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5040025 + 3663396 = 2245^2 + 1914^2 .

It is a cyclic number.

It is not a de Polignac number, because 8703421 - 2⁵ = 8703389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8703427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4480 + ... + 6121.

It is an arithmetic number, because the mean of its divisors is an integer number (2178711).

Almost surely, 2^8703421 is an apocalyptic number.

It is an amenable number.

8703421 is a deficient number, since it is larger than the sum of its proper divisors (11423).

8703421 is a wasteful number, since it uses less digits than its factorization.

8703421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11422.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 8703421 is about 2950.1560975650. The cubic root of 8703421 is about 205.6979659627.

Adding to 8703421 its reverse (1243078), we get a palindrome (9946499).

The spelling of 8703421 in words is "eight million, seven hundred three thousand, four hundred twenty-one".